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ACE4101 데이터시트 PDF




ACE Technology에서 제조한 전자 부품 ACE4101은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 ACE4101 기능
기능 Li-ion Switching Charger IC
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ACE4101 데이터시트, 핀배열, 회로
ACE4101
Max. 1.6A Li-ion Switching Charger IC
Description
The ACE4101 is a 1.6A LiIon battery switching charger intended for 5V adapters. Low power
dissipation, an internal MOSFET and its compact package with minimum external components
requirement makes the ACE4101 ideal for portable applications. The ACE4101 includes complete charge
termination circuitry, automatic recharge and a ±1% 4.2V/4.35V float voltage.
External sense resistor and Reverse diode is not need. Buildin thermal feedback mechanism regulates
the charge current to control the die temperature during high power operation or at elevated ambient
temperature.
Battery charge current, charge timeout and end-ofcharge indication parameters can program by
external components. Additional features include shorted cell detection and overvoltage protection.
Features
Very Low Power Dissipation
1.6A Maximum Charge Current
Standalone Capability with no Requirement of External MOSFET, Sense Resistor or Blocking Diode
ConstantCurrent/ConstantVoltage Operation with Thermal Regulation to Maximize Charge Rate
Without Risk of Overheating
Charges Single Cell LiIon Batteries Directly from USB Port
Drainage Charge Current Thermal Regulation Status Outputs for LED or System Interface
Preset 4.2V/4.35V float Voltage with ±1% Accuracy
Automatic Recharge
Application
Cellular Telephones, PDA, MP3 Players
Charging Docks and Cradles
Handheld BatteryPowered Devices
Handheld Computers
Typical Application
ACE4101
Device parameter should be select as typical application
VER 1.4 1




ACE4101 pdf, 반도체, 판매, 대치품
ACE4101
Max. 1.6A Li-ion Switching Charger IC
Note : Supply current includes ISET pin current (approximately 100μA) but does not include any current delivered to the battery
through the BAT pin (approximately 100mA).
Block Diagram
Electrical Performance (Tested under TA=25, unless otherwise specified)
VER 1.4 4

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ACE4101 전자부품, 판매, 대치품
ACE4101
Max. 1.6A Li-ion Switching Charger IC
When the battery voltage approaches the programmed float voltage, the charge current will start to
decrease. It terminates the charge cycle when the charge current falls to 10% of the fullscale value after
the final float voltage is reached. When the ISET pin voltage falls below 100mV for longer than tTERM
(typically 1ms), charging is terminated. The charge current is latched off and the ACE4101 enters standby
mode, where the input supply current drops to 200μA. (Note: C/10 termination is disabled in trickle
charging and thermal limiting modes).
Manual Shutdown
Floating the ISET pin by removing the resistor from ISET pin to ground can put the device in shutdown
mode. The battery drain current is thus reduced to less than 5μA and the supply current to less than 50μA.
Reconnecting the resistor back will restart a new charge cycle.
Once manually shutdown, the CHRG pin is in a weak pulldown state if VIN is above UVLO voltage. The
CHRG pin is in a high impedance state if the ACE4101 is in under voltage lockout mode.
Automatic Recharge
After the termination of the charge cycle, the ACE4101 constantly monitors the BAT pin voltage and
starts a new charge cycle when the battery voltage falls below 4.05V, keeping the battery at fully charged
condition. CHRG output enters a strong pulldown state during recharge cycles.
Inductor Selection
The peaktopeak ripple is limited to 30% of the maximum output current. This places the peak current
far enough from the minimum over current trip level to ensure reliable operation while providing enough
current ripples for the current mode converter to operate stably. In this case, for 1.6A maximum output
current, the maximum inductor ripple current is 667 mA. The inductor size is estimated as following
equation:
Layout Considerations
CIN must be close to Pins VIN and GND, the loop area formed by CIN and GND must be minimized. Place
CCHRIN as close to Pins CHRIN and GND. The PCB copper area associated with SW pin must be
minimized to avoid the potential noise problem. FB Resistors and the traces connecting to the FB pin
must not adjacent to the SW net on the PCB layout to avoid the noise problem. ISET resistor must be as
far away with the SW net as possible. The thermal pad under the IC must be tied to the ground area on
the top layer, and use via to connect this ground area to any internal ground planes.
VER 1.4 7

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관련 데이터시트

부품번호상세설명 및 기능제조사
ACE4101

Li-ion Switching Charger IC

ACE Technology
ACE Technology

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